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Posted by: LeNeon Nov 9 2021, 08:09 AM

Hello!

We're enjoying our 914 1.7, but a few issues have developed:
- Our windshield wipers failed (yay, we'll have to remove the fuel tank...)
- The heater had been (wrongly) restored, we'll see when we drop the tank
- some localised rust... not too worrying though.

But now we have a bigger issue, and we don't understand where it might come from.
When accelerating under load, the car was "choking" at 3000 rpm. We adjusted the push-rods, as well as the injection a few hundreds of kilometres ago, it helped, but didn't solve the problem.

Now, it's becoming really worrying, the car really hasn't any power. It's impossible to drive it, because the car just doesn't accelerate. When at idle though, the engine is fine, only a few hiccups. And when without load (wheels in the air), we can go through the gears and rev without any problems...

Thanks in advance for your help!

Peace

Posted by: mepstein Nov 9 2021, 08:15 AM

Did you check the timing?

Posted by: ndfrigi Nov 9 2021, 09:25 AM

Now, it's becoming really worrying, the car really hasn't any power. It's impossible to drive it, because the car just doesn't accelerate. When at idle though, the engine is fine, only a few hiccups. And when without load (wheels in the air), we can go through the gears and rev without any problems...


maybe transmission or clutch disc and clutch pressure plate?

Posted by: wndsrfr Nov 9 2021, 09:33 AM

Fuel filter clogged...

Posted by: emerygt350 Nov 9 2021, 10:58 AM

Interesting. Pull a plug and have a look at it. Have you replaced the air filter (rat nest could cause a restriction)? Then I would start with double checking the timing (should be fine if you haven't messed with it.

Then look at the points while you are in there, those can cause issues like this.
Coil can also cause stuff like that (but I would save that for later). You could check the dwell easily while looking at this other ignition related stuff.

Check the fuel pressure (should be 29psi).

If the timing and points and pressure look good then I would definitely check the fuel filter. Cheap but kind of a pain depending on where your pump and filter are.

Posted by: rjames Nov 9 2021, 12:41 PM

Check the easy stuff first.

Posted by: wndsrfr Nov 10 2021, 08:58 AM

Plus, the strainer in the tank could be clogged...not easy to deal with but a short term test would be to blow it clear with low pressure air backflush then test drive...

Posted by: mepstein Nov 10 2021, 09:09 AM

That would certainly make sense. Enough fuel to idle, starving under load.

Posted by: rhodyguy Nov 10 2021, 09:11 AM

When the tank is empty, you can look down the fill hole with a flashlight and check the condition of the tank strainer/sock. Should be standing tall and not sucked flat. Also a good opportunity to look for rust/debris in the bottom of your tank.

Posted by: burlybryan Nov 10 2021, 09:20 AM

Also, since the heater was restored, which meant removing the fuel tank, it's possible a rubber fuel line is kinked. Happens a lot when re-installing the tank.

Posted by: Dave_Darling Nov 10 2021, 01:17 PM

It the car injected or carbureted?

--DD